9以下版本修改配置：

1. <plugin>  
2.     <groupId>org.mortbay.jetty</groupId>  
3.     <artifactId>maven-jetty-plugin</artifactId>  
4.     <version>6.1.26</version>  
5.     <configuration>               
6.         <scanIntervalSeconds>3</scanIntervalSeconds>  
7.         <
   connectors>  
8.             <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">  
9.                 <port>9090</port>  
10.             </connector>  
11.         </connectors>                     
12.         <scanTargetPatterns>  
13.             <scanTargetPattern
    >  
14.                 <directory>src/main/webapp/WEB-INF</directory>  
15.                 <excludes>  
16.                     <exclude>**/*.jsp</exclude>  
17.                 </excludes>  
18.                 <includes>  
19.                     <include>**/*.properties</
    include>  
20.                     <include>**/*.xml</include>  
21.                 </includes>  
22.             </scanTargetPattern>  
23.         </scanTargetPatterns>  
24.     </configuration>  
25. </plugin> 

9以上的版本，新增以下內容無效。

1. <connectors>  
2.             <connector implementation="org.mortbay.jetty.nio.SelectChannelConnector">  
3.                 <port>9090</port>  
4.             </connector>  
5.         </connectors>              

檢視官方文件，發現<connnector>節點變成了<httpConnector>,在<httpConnector>下新增節點<port>即可，完整配置如下：

<plugin>
   <groupId>org.eclipse.jetty</groupId>
   <artifactId>jetty-maven-plugin</artifactId>
   <version>9.2.6.v20141205</version>
   <configuration>
      <stopKey>stop</stopKey>
      <stopPort>9999</stopPort>
      <scanIntervalSeconds>5</scanIntervalSeconds>
      <contextXml>${project.basedir}/src/main/resources/jetty-context.xml</contextXml>
      <webApp>
         <contextPath>/NeuPushService</contextPath>
      </webApp>
      <httpConnector>
         <port>8082</port>
      </httpConnector>
   </configuration>
</plugin>